3F2L

Crystal structure analysis of the K171A mutation of N-terminal type II cohesin 1 from the cellulosomal ScaB subunit of Acetivibrio cellulolyticus

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICROBATCH	8.5	293	2.4M di-ammonium hydrogen phosphate, 0.1M Tris pH 8.5, Microbatch, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.52	51.21

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.934	α = 90
b = 53.934	β = 90
c = 112.318	γ = 120

Symmetry
Space Group	P 31 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	IMAGE PLATE	RIGAKU RAXIS IV++	Osmic Confocal Mirrors	2006-05-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.85	50	100	0.097	0.097	11.4	5.7	16830	16830		-3	27.53

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.85	1.85	100		0.49	0.49	1.7	5.7	16830

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	THROUGHOUT	PDB ENTRY 1qzn	1.85	29.21	15926	15926	851	99.94	0.14245	0.14245	0.13895	0.21218	RANDOM	28.048

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
-0.16	-0.08		-0.16		0.25

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.188
r_dihedral_angle_3_deg	10.717
r_dihedral_angle_4_deg	9.305
r_sphericity_free	8.409
r_scangle_it	7.644
r_dihedral_angle_1_deg	6.227
r_scbond_it	5.976
r_sphericity_bonded	5.45
r_mcangle_it	4.432
r_rigid_bond_restr	3.504
r_mcbond_it	3.427
r_angle_refined_deg	1.194
r_nbtor_refined	0.302
r_nbd_refined	0.199
r_symmetry_vdw_refined	0.195
r_symmetry_hbond_refined	0.136
r_xyhbond_nbd_refined	0.119
r_chiral_restr	0.077
r_bond_refined_d	0.01
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1341
Nucleic Acid Atoms
Solvent Atoms	240
Heterogen Atoms	60

Software

Software
Software Name	Purpose
HKL-2000	data collection
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling